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Development of Repair Technology for Water Leakage Sections in PCV Testing Concrete Injection Technology for Water Leak Stoppage Treatment inside Suppression Chamber Using Full-Scale Mock-up Facility [Led by TOSHIBA]. (October 15, 2016)


IRID is advancing the development of repair technology for water leakage sections in the Primary Containment Vessel (PCV) under a project led by Ministry of Economy, Trade and Industry (METI) in FY 2016-FY 2017 towards the decommissioning of the Fukushima Daiichi Nuclear Power Station (NPS). As a part of this project, a method of injecting concrete to repair water leakage points inside suppression chamber (S/C), a structure that lies at the lower part of the PCV, is currently being examined.

Completion of Preparation for Full-Scale Test Facility Simulating the Lower Part of the PCV and Future Test Plans (October 13, 2016)


A full-scale mock-up facility* is now ready for testing purposes to establish technology for repairing water leakage points in the lower part of the Primary Containment Vessel (PCV).

* This test facility simulates vent pipes, the suppression chamber (S/C), and torus room wall found in the lower part of the PCV in Fukushima Daiichi Nuclear Power Station (NPS) Unit 2. The facility is of full-scale size, but represents a 1/8 portion of the circular S/C.